Apparatus of remotely adjusting the brightness of multiple LED lamps through controllable rectification waves

2015 
Provided is an apparatus of remotely adjusting the brightness of multiple LED lamps through controllable rectification waves. The apparatus comprises a rectification control unit and multiple LED lamp brightness adjusting units. The rectification control unit includes a transformer, a control power supply module, a controllable rectification module, a zero-crossing detection module, a single-chip microcomputer control module, a trigger control module, and a brightness giving module. A single-phase 220V AC power supply is input, a controllable rectification voltage with the effective voltage value lower than 220V is output, and a brightness control signal formed by a guide wave, an address wave and a brightness wave is sent in the controllable rectification voltage. Each LED lamp brightness adjusting unit includes an adjusting power supply module, a waveform sampling module, a single-chip microcomputer adjusting module, an address setting module and an LED driving module. The brightness of LED lamps is controlled on the basis of the brightness control signal in the controllable rectification voltage. The apparatus does not need a remote controller, a control line needs not to be laid additionally, a single-phase power line is directly utilized to transmit the brightness control signal, and the brightness of multiple LED lamps can be separately adjusted in a remote manner.
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